X-Therma Inc.
Richmond, US · Founded 2014 · Delaware corporation · 31 employees on LinkedIn · 4 known investors
X-Therma develops a proprietary peptoid-based technology that inhibits ice crystal formation to enable long-term sub-zero preservation and transport of cells, tissues, organs, and other biologics. Its products, including the XT-ViVo preservation solution and TimeSeal organ transport device, target organ and biologic preservation for transplantation.
Founders & leadership
X-Therma Inc. was founded in 2014 by Xiaoxi Wei and Mark Kline.
Investors · 4
Reported raises · per SEC filings
Form D private placements$35.4M disclosed across 3 rounds · 2021–2024
▶$22.4MraisedMar 2024 · 39 investors · BiotechnologyRule 506(b)
- Johannes WeggemannExecutive Officer, Director
- Xiaoxi WeiExecutive Officer, Director
- Mark KlineExecutive Officer, Director
- James GreenwoodDirector
- Offering amount
- $22.4M
- Amount sold
- $22.4M
- Minimum investment
- $20K
- First sale
- Mar 2024
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$2.6MraisedDec 2021 · 20 investors · BiotechnologyRule 506(b)
- Mark KlineExecutive Officer, Director
- Xiaoxi WeiExecutive Officer, Director
- Johannes WeggemannDirector
- Offering amount
- $2.6M
- Amount sold
- $2.6M
- Minimum investment
- $10.4K
- First sale
- Dec 2021
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$10.4MraisedNov 2021 · 20 investors · BiotechnologyRule 506(b)
- Johannes WeggemannDirector
- Xiaoxi WeiExecutive Officer, Director
- Mark KlineExecutive Officer, Director
- Offering amount
- $10.4M
- Amount sold
- $10.4M
- Minimum investment
- $25K
- First sale
- Oct 2021
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Competitors · 4
by search overlapCompanies competing with X-Therma Inc. for the same Google search keywords, organic and paid, via search-intersection analysis.
Non-dilutive funding · 9 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| National Institutes of Health (NIH)National Institutes of Health | Phase II | 2023 | $971.2K |
| National Science Foundation | Phase II | 2018 | $743.3K |
| U.S. ArmyArmy | Phase II | 2017 | $999.8K |
| Department of DefenseDefense Health Program | Phase II | 2017 | $999K |
| U.S. ArmyArmy | Phase I | 2017 | $149.9K |
| Department of DefenseDefense Health Program | Phase II | 2016 | $999.9K |
| National Science Foundation | Phase I | 2016 | $225K |
| Department of DefenseDefense Health Program | Phase I | 2016 | $154.6K |
| Department of DefenseDefense Health Program | Phase I | 2015 | $150K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
Frequently asked questions
- What does X-Therma Inc. do?
- X-Therma develops a proprietary peptoid-based technology that inhibits ice crystal formation to enable long-term sub-zero preservation and transport of cells, tissues, organs, and other biologics. Its products, including the XT-ViVo preservation solution and TimeSeal organ transport device, target organ and biologic preservation for transplantation.
- Who founded X-Therma Inc.?
- X-Therma Inc. was founded by Xiaoxi Wei, Mark Kline in 2014.
- Who are X-Therma Inc.'s investors?
- X-Therma Inc.'s investors include Aurum Venture Partners, Dellin Investments, VU Venture Partners, Zen11 Holding.
- How much funding has X-Therma Inc. raised?
- X-Therma Inc. has disclosed $35.4M raised across 3 rounds.
- Where is X-Therma Inc. headquartered?
- X-Therma Inc. is headquartered in Richmond, US.




